Link your client
Dota can post what it is doing to Sybil while you play, through Game State Integration. It is the only channel that knows about a match before it is over — everything else on this site is post-game.
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What this can and cannot do
The client only sends the blocks Valve lets it. Your own hero, items, abilities and the match clock come through reliably. The interesting ones for drafting — the draft block and the other nine players' account IDs — have historically been restricted to spectators, and may simply not arrive while you are the one playing.
Rather than guess, this page reports exactly which blocks your client sends and shows the raw payload. If account IDs do come through, the draft advisor can read the lobby automatically; if they do not, it still works from IDs you paste in.
Your token is generated in this browser and stored here. Anyone who has it can write to your live state, so treat the config file as private — and use New token if it leaks.